So I have been trying to implement a way to check if the user had already sent a friend a request to the profile visited, or if the user has received a friend request from the profile visited. Based on the results, the buttons will be set to sent request, accept request ,add friend or friends
However, in my Firebase function, the first 3 if statements aren't met, even if one of them was supposed to be met. The first else if statement should have worked because I already sent a friend request to the profile visited.
When I ran a debug, it shows something like value = {sentFriendRequests={jmarston=2}}. So Firebase knows that I added John Marston as a friend, but for some reason the else if statement wasn't working. Its the else statement that works instead
My code is down below:
checkFriendRequestStatus function
private void checkFriendRequestStatus(final ButtonStatus buttonsCallback, final String strSignedInUID, final String visitedUsername, final String strVisitedUID) {
final DatabaseReference checkFriendRequestsRef = database.getReference("friend_requests/test/" + strSignedInUID);
checkFriendRequestsRef.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
// choice is 1 to show buttons, then select which buttons to show with second params
if (dataSnapshot.child("friends/" + visitedUsername).getValue(String.class) == strVisitedUID) {
buttonsCallback.setButtonStatus(1, 1);
}
else if (dataSnapshot.child("sentFriendRequest/" + visitedUsername).getValue(String.class) == strVisitedUID) {
buttonsCallback.setButtonStatus(1, 2);
}
else if (dataSnapshot.child("receivedFriendRequests/" + visitedUsername).getValue(String.class) == strVisitedUID) {
buttonsCallback.setButtonStatus(1, 3);
}
else {
buttonsCallback.setButtonStatus(1, 4);;
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
onViewCreated function
#Override
public void onViewCreated(View view, Bundle savedInstanceState){
sRFullName = (TextView) view.findViewById(R.id.sRUFullNameET);
addFriendBtn = (Button) view.findViewById(R.id.sRUAddFriendBtn);
sentRequestBtn = (Button) view.findViewById(R.id.sRUFriendReqSentBtn);
acceptRequestBtn = (Button) view.findViewById(R.id.sRUAcceptRequestBtn);
wereFriendsBtn = (Button) view.findViewById(R.id.sRUWeFriendsBtn);
final String strVisitedUserID = getArguments().getString("sRUserID");
final String visitedUsername = getArguments().getString("sRUsername");
ShPreference = getActivity().getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
// converts Stringed userID back to Int
final String strSignedInUID = ShPreference.getInt(currentUserID, 0) + "";
final String signedInUsername = ShPreference.getString(currentUsername, "");
// converts the userSignedIn id to string
//final String strSignedInUID = userSignedInID + "";
// checks if the current User visited has been sent a friend Request
checkFriendRequestStatus(new ButtonStatus() {
#Override
public void setButtonStatus(int choice, int button) {
/**
* The choice params is for the choose if to show or hide buttons.
* The buttons params selects which buttons are to show or hide
*/
addFriendBtn.setVisibility(View.GONE);
sentRequestBtn.setVisibility(View.GONE);
acceptRequestBtn.setVisibility(View.GONE);
wereFriendsBtn.setVisibility(View.GONE);
// if choosed to show buttons
if (choice == 1) {
// show buttons depending on the friendRequest status
if (button == 1) {
wereFriendsBtn.setVisibility(View.VISIBLE);
}
else if (button == 2) {
sentRequestBtn.setVisibility(View.VISIBLE);
}
else if (button == 3) {
acceptRequestBtn.setVisibility(View.VISIBLE);
}
else {
addFriendBtn.setVisibility(View.VISIBLE);
}
}
}
}, strSignedInUID, visitedUsername, strVisitedUserID);
// sets the name with the Full Name; called from SearchResultsAdapter
sRFullName.setText(getArguments().getString("sRFullName"));
}
To compare String object use equals instead of == (double equals). Double equals will compare reference not their values.
Update your code of comparison like below:
private void checkFriendRequestStatus(final ButtonStatus buttonsCallback, final String strSignedInUID, final String visitedUsername, final String strVisitedUID) {
final DatabaseReference checkFriendRequestsRef = database.getReference("friend_requests/test/" + strSignedInUID);
checkFriendRequestsRef.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
// choice is 1 to show buttons, then select which buttons to show with second params
if (dataSnapshot.child("friends/" + visitedUsername).getValue(String.class).equals(strVisitedUID)) {
buttonsCallback.setButtonStatus(1, 1);
}
else if (dataSnapshot.child("sentFriendRequest/" + visitedUsername).getValue(String.class).equals(strVisitedUID)) {
buttonsCallback.setButtonStatus(1, 2);
}
else if (dataSnapshot.child("receivedFriendRequests/" + visitedUsername).getValue(String.class).equals(strVisitedUID)) {
buttonsCallback.setButtonStatus(1, 3);
}
else {
buttonsCallback.setButtonStatus(1, 4);;
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
});
}
Related
I have a database that is being checked using a Cursor. This database compares the data in the database to the user entered username and password. If they match data in the database a boolean is returned true. I can use a toast to output the boolean which correctly outputs as true or false if the input data does or does not match.
However, i am trying to use the boolean to move to the next activity. If the boolean is true the next intent is started. This does not work for some reason and I cant seem to work out why. Any help would be great. Thanks!
public Button btnLogin, btnSignup;
public EditText UsernameInput, PasswordInput;
public DatabaseHelper db;
public static String passUser, passPass, passFirst, passSecond;
public int count;
public Boolean matchingUser = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Align page and remove notification bar
getWindow().setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
// Define everything
btnLogin = findViewById(R.id.btnLogin);
btnSignup = findViewById(R.id.btnSignup);
UsernameInput = findViewById(R.id.UsernameInput);
PasswordInput = findViewById(R.id.PasswordInput);
db = new DatabaseHelper(this);
// validation button
btnLogin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
validateLogin(UsernameInput.getText().toString(), PasswordInput.getText().toString());
}
});
btnSignup.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
CreateUser();
}
});
}
// Validation code
public void validateLogin(String userName, String userPassword)
{
if (userName.equals("")|| userPassword.equals(""))
{
Toast.makeText(getApplicationContext(),"Fields are empty",Toast.LENGTH_SHORT).show();
}
else
{
// CHECKING USER LOGIN DETAILS
Cursor cursor = db.CompareUserData();
for (count = 0; count<=cursor.getCount();count++)
{
if (cursor.moveToPosition(count))
{
if (UsernameInput.getText().toString().equals(cursor.getString(0))&&PasswordInput.getText().toString().equals(cursor.getString(1)))
{
matchingUser = true;
}
}
Toast.makeText(this, "boolean : "+ matchingUser, Toast.LENGTH_SHORT).show();
if (matchingUser = true)
{
passUser = cursor.getString(0);
passPass = cursor.getString(1);
passFirst = cursor.getString(2);
passSecond = cursor.getString(3);
getUser();
getPass();
getFirst();
getSecond();
Toast.makeText(getApplicationContext(), "Successfully logged in", Toast.LENGTH_SHORT).show();
LoginValidation();
}
if (matchingUser = false)
{
Toast.makeText(getApplicationContext(),"Incorrect Username",Toast.LENGTH_SHORT).show();
}}
}
}
private void LoginValidation()
{
// Changing activity code
startActivity(new Intent(MainActivity.this,Login_Biometrics.class));
}
private void CreateUser()
{
// Changing activity code
startActivity(new Intent(MainActivity.this,createUser.class));
}
public static String getUser ()
{
return passUser;
}
public static String getPass ()
{
return passPass;
}
public static String getFirst ()
{
return passFirst;
}
public static String getSecond ()
{
return passSecond;
}
It wont work with one = equal sign just do:
if(matchingUser) {
// if true do something
} else {
// if false do something
}
In your case:
if (matchingUser) {
passUser = cursor.getString(0);
passPass = cursor.getString(1);
passFirst = cursor.getString(2);
passSecond = cursor.getString(3);
getUser();
getPass();
getFirst();
getSecond();
Toast.makeText(getApplicationContext(), "Successfully logged in",Toast.LENGTH_SHORT).show();
LoginValidation();
} else {
Toast.makeText(getApplicationContext(),"Incorrect Username",Toast.LENGTH_SHORT).show();
}
You have to understand some basics:
Assignment operator =
Is used to assign value to some variable.
Logical operator ==
Is used to make some logical comparison.
So instead of doing this:
if (matchingUser = true)
{
...
Do this
if (matchingUser == true)
{
...
Apply this for every condition checking in your code.
I have three methods:
The first checks the gender of the user
The second checks the housing assortment type
The third puts the sorted users into my card adapter
My issue is with the second method checkHousing(). If the user chooses Same Sex housing it checks all the other Males who have selected Same Sex housing.Vice-versa for the Female users. So far Iv only been able to get all the the users who have chosen Same Sex, both male and female.
Any suggestions? I feel like there is a more efficient way to do this but cant seem to figure it out.
By the way, I'm using Firebase Real Time database to store the user's info.
private String userSex;
private String thisUserSex;
public void checkUserSex() {
final FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
DatabaseReference userDb = usersDb.child(user.getUid());
userDb.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.exists()) {
if (dataSnapshot.child("sex").getValue() != null) {
userSex = dataSnapshot.child("sex").getValue().toString();
switch (userSex) {
case "Male":
thisUserSex = "Male";
break;
case "Female":
thisUserSex = "Female";
break;
}
checkHousing();
} } }
#Override
public void onCancelled(DatabaseError databaseError) {
} }); }
private String housingType;
private String assortment;
public void checkHousing() {
final FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
final DatabaseReference userDb = usersDb.child(user.getUid());
userDb.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.exists()) {
if (dataSnapshot.child("Housing").getValue() != null) {
housingType = dataSnapshot.child("Housing").getValue().toString();
switch (housingType) {
case "Same Sex":
assortment = "Same Sex";
break;
case "Uni-Sex":
assortment = "Uni-Sex";
break;
} if (assortment == "Same Sex") dataSnapshot.getValue().toString().equals(thisUserSex);
else { assortment = "UniSex";
}
}
}getRoomMates();
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
public void getRoomMates(){
usersDb.addChildEventListener(new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
if (dataSnapshot.child("Housing").getValue() != null) {
if (dataSnapshot.exists() &&
!dataSnapshot.child("connections").child("nope").hasChild(currentUId) &&
!dataSnapshot.child("connections").child("yeps").hasChild(currentUId) &&
dataSnapshot.child("Housing").getValue().toString().equals(assortment)) {
String profileImageUrl = "default";
if (!dataSnapshot.child("profileImageUrl").getValue().equals("default")) {
profileImageUrl =
dataSnapshot.child("profileImageUrl").getValue().toString();
}
cards item = new cards(dataSnapshot.getKey(),
dataSnapshot.child("name").getValue().toString(), profileImageUrl);
rowItems.add(item);
arrayAdapter.notifyDataSetChanged();
} } }
You could split the Same Sex into Same SexM andSame SexF and store those seperatley, and then chose the roommates based on the M or F in the database.
Inside of the switch:
if(thisUserSex.equalsIgnoreCase("Male"){
assortment = "Same SexM";
}else{
assortment = "Same SexF";
}
Check what information is in the database, I have had instances where the data is not being changed during run time and that might be the cause of it always returning the same result. I know that you can use a debug mode in most editors or you can print out the current value for the string housing type.
Edit: Looking closer at the code you are using a real time database so check if the information you are submitting is getting processed correctly.
Hye, my problem is to rewrite if the user put the same nameItem that will change the price and the quantityItem, if not the item will add new id. i also do auto increment on id.
My Database :
This is how i try but when the name == nameItem can't read and run on else in on DataChange.
if(i != 0){
for(id1 = 1; id1<=i; id1++){
if(id1 != 0){
final DatabaseReference reff1 = FirebaseDatabase.getInstance().getReference().child("CartList").child(userID).child(String.valueOf(id1));
reff1.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
String carinama = dataSnapshot.child("nameItem").getValue().toString();
String changequantity = dataSnapshot.child("quantityItem").getValue().toString();
if(nameItem == carinama) {
int calcQuantity = Integer.parseInt(cdtb.getQuantityItem());
newpositionItem = newpositionItem + calcQuantity;
String x = String.valueOf(newpositionItem);
cdtb.setQuantityItem(x);
int price1Item = Integer.parseInt(priceItem);
newpositionItem = newpositionItem * price1Item;
cdtb.setPriceItem(d2f.format(newpositionItem));
reff1.setValue(cdtb);
id1 = i;
}else {
int calcQuantity = Integer.parseInt(changequantity);
newpositionItem = newpositionItem + calcQuantity;
String x = String.valueOf(newpositionItem);
cdtb.setQuantityItem(x);
double price1Item = Double.parseDouble(priceItem);
newpositionItem = newpositionItem * price1Item;
cdtb.setPriceItem(d2f.format(newpositionItem));
reff1.setValue(cdtb);
}
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
Toast.makeText(getContext(), ""+databaseError, Toast.LENGTH_SHORT).show();
}
});
}else {
}
}
}else{
cdtb.setImageItem(imageUrl);
cdtb.setNameItem(nameItem);
cdtb.setPriceItem(d2f.format(calcPrice));
cdtb.setSpecification(specItem);
cdtb.setQuantityItem(positionItem);
reff.child(String.valueOf(++maxid)).setValue(cdtb);
}
Thank you...
nameItem and carinama is String
in java to compare two string you must use equals method not "=="
because == will compare object location in memory and not the content string
so you code condition will be
if(nameItem.equals(carinama)){
//your code here
}
This is the code, and it doesn't check if the value in my editText exists.
mSubmitBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
final String title_val = mPostTitle.getText().toString().trim();
mDatabase2 = FirebaseDatabase.getInstance().getReference().child("Forums");
mDatabase2.child("title").child("KS1: "+title_val).addListenerForSingleValueEvent(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
if(dataSnapshot.exists()) {
String success = "Your title already exists...";
Toast.makeText(PostActivityKinderSection1.this, success, Toast.LENGTH_LONG).show();
mSubmitBtn.setEnabled(true);
}
else {
mSubmitBtn.setEnabled(false);
startPosting();
}
}
});
}
});
I want to avoid saving multiple times with the same title in my firebase.
You can not only check if title child exist, you have to iterate over all forums to find out if there is already one with title you want to save. You can do it like this:
final String title_val = "KS1: " + mPostTitle.getText().toString().trim();
mDatabase2 = FirebaseDatabase.getInstance().getReference().child("Forums");
mDatabase2.addListenerForSingleValueEvent(new ValueEventListener() {
#Override
void onDataChange(DataSnapshot forumsSnapshot) {
boolean isTitleAlreadyUsed = false;
for (DataSnapshot specificForum : forumsSnapshot.getChildren()) {
// Check if key 'title' exists and if title value is equal to value to save (title_val)
if (specificForum.hasChild("title") && (title_val.equals(specificForum.child("title").getValue()))){
isTitleAlreadyUsed = true;
}
}
if (isTitleAlreadyUsed) {
String success = "Your title already exists...";
Toast.makeText(PostActivityKinderSection1.this, success, Toast.LENGTH_LONG).show();
mSubmitBtn.setEnabled(true);
}
else {
mSubmitBtn.setEnabled(false);
startPosting();
}
}
}
If you have performance issue try to replace for-loop with while-loop, or use the title as child key in your db construction.
I want resume the same Activity if i without complete filling the form and click on submit button and exit my Activity .And again i start my app its same Activity i want to start.How can do this.Can some one help me please.Thanks in Advance.
Here is my code.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.registration_details);
SharedPreferences
settings=getSharedPreferences("prefs",0); boolean
firstRun=settings.getBoolean("firstRun",false);
if(firstRun==false)//if running for first time
{
SharedPreferences.Editor editor=settings.edit();
editor.putBoolean("firstRun",true);
editor.commit();
//execute your code for first time
}
else
{
Intent iSubmit = new Intent(Registration_Form.this,Employee_List.class);
startActivity(iSubmit);
finish();
//Default Activity startActivity(a);
}
databaseHelper = new DatabaseHelper(this);
databaseHelper.onOpen(db);
et_CompanyName = (EditText) findViewById(R.id.editText_CompanyName);
et_EmployeeName = (EditText) findViewById(R.id.editText_EmployeeName);
et_CompanyWebsite = (EditText) findViewById(R.id.editText_CompanyWebSite);
et_ContactNumber = (EditText) findViewById(R.id.editText_ConatctNo);
et_Email_Id = (EditText) findViewById(R.id.editText_EmailId);
radioGroup_FinancialYaer = (RadioGroup)findViewById(R.id.radioGroupFinanncialYear);
btnSubmit = (Button) findViewById(R.id.buttonSubmit);
btnSubmit.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
final String stringEmail_Id = et_Email_Id.getText().toString()
.trim();
final String stringCompanyWebsite = et_CompanyWebsite.getText()
.toString().trim();
if ((et_CompanyName.getText().toString().isEmpty())) {
et_CompanyName.setError("Field Can Not Be Empty !");
}
else if (!et_CompanyName.getText().toString().trim()
.matches("[a-zA-Z ]+")) {
et_CompanyName.setError("Accept Alphabets Only.");
}
else if ((et_EmployeeName.getText().toString().isEmpty())) {
et_EmployeeName.setError("Field Can Not Be Empty !");
}
else if (!et_EmployeeName.getText().toString().trim()
.matches("[a-zA-Z ]+")) {
et_EmployeeName.setError("Accept Alphabets Only.");
}
else if ((et_CompanyWebsite.getText().toString().isEmpty())) {
et_CompanyWebsite.setError("Field Can Not Be Empty !");
}
else if (!isValidUrl(stringCompanyWebsite)) {
et_CompanyWebsite.setError("Invalid URL");
}
else if ((et_ContactNumber.getText().toString().isEmpty())) {
et_ContactNumber.setError("Field Can Not Be Empty !");
}
else if (!isValidEmail(stringEmail_Id)) {
et_Email_Id.setError("Invalid Email");
}
else
{
String stringCompanyName = et_CompanyName.getText()
.toString().trim();
String stringContactNumber = et_ContactNumber.getText()
.toString().trim();
String stringEmployeeName = et_EmployeeName.getText()
.toString().trim();
int selectedId = radioGroup_FinancialYaer.getCheckedRadioButtonId();
Log.e("selectedId "," = " + selectedId);
radioButton_FinancialYaer = (RadioButton) findViewById(selectedId);
strFinancialYear = radioButton_FinancialYaer.getText().toString().trim();
Log.e("strRadioButton "," = " + strFinancialYear);
databaseHelper.insertRegstrationDetails(stringCompanyName,
stringEmployeeName, stringCompanyWebsite,
stringContactNumber, stringEmail_Id, strFinancialYear);
System.out.println("Data Inserted Successfully !!! ");
Intent iSubmit = new Intent(Registration_Form.this,Staff_Employee_Details.class);
startActivity(iSubmit);
finish();
}
}
});
}
// validating email id
private boolean isValidEmail(String email) {
String EMAIL_PATTERN = "[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" + "\\#"
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" + "(" + "\\."
+ "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" + ")+";
Pattern pattern = Pattern.compile(EMAIL_PATTERN);
Matcher matcher = pattern.matcher(email);
return matcher.matches();
}
private boolean isValidUrl(String url) {
Pattern p = Patterns.WEB_URL;
Matcher m = p.matcher(url);
if(m.matches())
return true;
else
return false;
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK)) {
AlertDialog.Builder alertbox = new AlertDialog.Builder(Registration_Form.this);
alertbox.setTitle("Do you wish to exit ?");
alertbox.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface arg0, int arg1) {
// finish used for destroyed activity
finish();
}
});
alertbox.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface arg0, int arg1) {
// Nothing will be happened when clicked on no button
// of Dialog
}
});
alertbox.show();
}
return super.onKeyDown(keyCode, event);
}
}
Put all your EditText values in a table in your Database.
Keep an extra column called count in your table. When user presses Submit button increment the value of count on the basis of number of entries user has entered at that moment in your EditText and save it in database.
When user again launches your app, check value of count, if it is equal to your expected value route him as per your requirement, if it's less than expected then show your form activity, populate data from database.
You can implement this feature by using a Splash Screen.
EDIT : WHAT YOU ACTUALLY WANTED
If user presses back button and starts your application you will be directed to the same activity if it's your launcher activity, else you can check if all the fields aren't filled then you can save a boolean value in SharedPreference and check it's state while launching your app and launch this activity if it's true.